#3F4CB6#3F4CB6

#3F4CB6 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.9% C 0.167 H 272.9°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CB6
RGB	rgb(63, 76, 182)
HSL	hsl(233, 49%, 48%)
HSV	hsv(233, 65%, 71%)
CMYK	cmyk(65.4%, 58.2%, 0%, 28.6%)
CIE-LAB	lab(37.12, 29.15, -57.84)
CIE-LCH	lch(37.12, 64.78, 296.75°)
OKLab	oklab(46.94% 0.0084 -0.1665)
OKLCH	oklch(46.94% 0.167 272.9)
XYZ	xyz(13.0750, 9.6019, 45.4112)
Luminance	0.0960 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CB6 #B6A93F

analogous

#3F88B6 #3F4CB6 #6D3FB6

triadic

#3F4CB6 #B63F4C #4CB63F

tetradic

#3F4CB6 #B63F88 #B6A93F #3FB66D

square

#3F4CB6 #B63F88 #B6A93F #3FB66D

split-complementary

#3F4CB6 #B66D3F #88B63F

monochromatic

#20265B #2F3989 #3F4CB6 #6872CB #959DDA

Accessibility & contrast

On white

7.19

#3F4CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3F4CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CB6

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CB6	#FFFFFF	#000000	##FFFFFF
##3F4CB6	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBA

Deuteranopia (green-blind)

#0052B4

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4cb6;
/* rgb */ color: rgb(63, 76, 182);
/* oklch */ color: oklch(46.9% 0.167 272.9);

Tailwind

colors: {
  custom: {
    50: '#817ecd',
    500: '#3f4cb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cb6;
$custom-light: #817ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cb6",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 182
  },
  "hsl": {
    "h": 233.445,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46935,
    "c": 0.16668,
    "h": 272.9
  },
  "luminance": 0.09603
}

Semantic roles & 50–950 ramp

primary

#3F4CB6

secondary

#C6BF8B

accent

#C950D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0913

muted

#7D7B82

Preview Lab

Preview with #3F4CB6

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →